Building block



A. H.'ROETH. BUILDING BLOCK.

APPLICATION FILED MAY 18, 1921.

Patented June 6, 1922.

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.Buizcmns BLOCK.

Application filed May 18,

Toal'l whomc't may concern:

Be it known that I, ALBERT R ETH, a citizen of :the' United States, and a resident of the city 0f New York, borough of Bronx, in the county of Bronx and State of New York, have nvented a .new and :Improved Building Block, of which the following is a full, clear, and exact description.

This invention relates to improvements in building blocks, particularly interlocking building blocks, an object of the invention beingto provide a novel pair of interlocking blocks and to provide locking means carried by the blocks which permit locking of the blocks when the blocks are spaced at various distances apart, so that the same sized blocks may be used to form hollow walls of dilferent widths.

A further object is to provide a pair of interlocking blocks of the character stated, which will positively prevent dampness from filtering through to the inner wall in a hollow wall construction.

Still another object is to provide a pair of blocks, which will be simple and practical in construction, durable, efficient and dampresisting in use, and comparatively inexpensive to manufacture.

lVith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings Figure 1 is a top plan view illustrating a plurality of my improved blocks assembled to form a hollow wall;

Figure 2 is a view similar to Figure 1, illustrating the blocks assembled to form a wall of greater width;

Figure 3 is an end view of a wall; and

Figure 4 is a perspective view of a smaller block.

Referring in detail to the drawings the reference numerals 1 and 2 are used to designate a pair of my improved blocks. The body portion of the blocks are relatively long and thin and vertical grooves such as 3 for the reception of cement are provided in the ends of the blocks. These grooves cooperate with the grooves of an adjacent block to form channels, as will be readily understood. The faces of the blocks 1 and 2 are water-proofed, as indicated at 4 by any well known process.

specification of Letters Patent. Patented June 6, 1922.

{1921. Serial 170,553.

Interlocking webs are carried by the blocks. In blocks of the general shape illustrated in Figure 1, each block'carries two webs and each web is located midway b tween the center of the block and one end thereof. The webs which are integral with the block 1 each include a pair of parallel arms 5 extending at right angles to the block. The inner faces of the arms are formed with vertical beads such as 6 spaced equal distances apart. The webs which are integral with the blocks 2 comprise tongues 7 extending at right angles to the blocks 2 and vertical beads 8 extending laterally from the tongues 7 and adapted to selectivelyinterlock between any of the beads 6.

lVith particular reference to Figure 1, it will be noted that when the blocks are assembled to form the thinnest possible hollow wall, the beads 6 at the extremities of the arms 5 are accommodated in grooves 9 in the blocks 2 and likewise the beads 8 at the extremities of the tongues 7 are accommodated in recesses 10 in the blocks 1 so that when the blocks are interlocked, as indicated in Figure 1, a durable and substantial wall construction is had.

It will be noted that the arms 5 as well as the tongues 7 are undercut, as indicated at 11, so that when the blocks are assembled tier upon tier, the recesses in the under faces of the arms and tongues will provide horizontal air spaces and there will be a free circulation of air both vertically and horizontally between the walls. The blocks are assembled in the usual manner and are secured in place with cement or mortar such as 12.

The arms 5 and tongues 7 are also water-proofed, the water-proofing extending through to the water-proofed outer faces of the blocks, so that moisture on the outer wall cannot possibly filter or leak through to the inner wall.

In Figure 4:, I have illustrated a block which is just half of the length of the blocks illustrated in Figures 1 and 2, and which is provided with a single web instead of a pair of webs. The particular size of the blocks is of course immaterial, although I have found that longer blocks of twenty-four inches and half blocks of twelve inches in length are very convenient for ordinary building purposes.

I have shown and described one of the preferred embodiments of the invention, but

it will be apparent that various slight changes and alterations might be made in the general form and arrangement of the parts described without departing from the invention and hence I do not wish to limit myself to the precise details set forth, but shall consider myself at liberty to make such slight changes and alterations as fairly fall Within the spirit and scope of the appended claims.

I claim:

1. A pair of interlocking building blocks, interlocking devices carried by the blocks adapted to selectively interlock in various positions, whereby the blocks may be optionally locked against relative separation at various distances apart.

2. A pair of building blocks, and interlocking Webs integral With the blocks adapted to selectively interlock in various positions, whereby the blocks may be optionally locked against relative separation at various distances apart.

3. A pair of building blocks, webs carried by the blocks, vertical beads on said Webs, and the beads on the Web of one block adapted to selectively interlock with any of the beads on the Web of the other block to prevent relative separation of said blocks.

4:. A pair of building blocks, interlocking Webs carried by the blocks, one of said Webs including a pair of parallel arms extending at right angles to the block, vertical beads on the inner faces of the arm, the other of said Webs including a tongue extending at right angles to the block, vertical beads on the opposite faces of the tongue adapted to selectively interlock with any of said first- Inentioned beads. i

ALBERT H. ROETH. 

